EP2136937A2 - Method and device for separating or classifying material to be fed - Google Patents

Method and device for separating or classifying material to be fed

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Publication number
EP2136937A2
EP2136937A2 EP08718049A EP08718049A EP2136937A2 EP 2136937 A2 EP2136937 A2 EP 2136937A2 EP 08718049 A EP08718049 A EP 08718049A EP 08718049 A EP08718049 A EP 08718049A EP 2136937 A2 EP2136937 A2 EP 2136937A2
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EP
European Patent Office
Prior art keywords
rotatable elements
separating
elements
rotatable
cooling medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08718049A
Other languages
German (de)
French (fr)
Other versions
EP2136937B1 (en
Inventor
Detlev Kupper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius AG
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Filing date
Publication date
Application filed by Polysius AG filed Critical Polysius AG
Publication of EP2136937A2 publication Critical patent/EP2136937A2/en
Application granted granted Critical
Publication of EP2136937B1 publication Critical patent/EP2136937B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers

Definitions

  • a Drehstabrost or sieve tray system which can be cooled or heated by means of electrical energy, liquids or gases.
  • a cooled Klassierrost In the heat treatment of raw materials, especially in the preheating or calcination of raw materials of the cement or lime industry, a cooled Klassierrost but has not been used.
  • the invention has for its object to improve the method and apparatus for separating or classifying feedstock in the field of heat treatment of raw materials, especially in the preheating or calcination of raw materials of the cement or lime industry.
  • the device according to the invention for separating or classifying feed material into at least two different grain fractions has a screening device which is formed by rotatable elements, in particular a roller grate, wherein at least a finer grain fraction falls through between the rotatable elements and means for supplying a cooling medium to the rotatable elements
  • the rotatable elements have a base body and an outer sheath, wherein the base body provides a running in the direction of its axis of rotation, acted upon by the cooling medium channel, which is in communication with the means for supplying the cooling medium.
  • roller grates are known in other fields, especially in coaling systems, these roller grates are only used at ambient temperatures. An application under extreme conditions, as prevail, for example, in the preheating or calcination of raw materials of the cement or lime industry, has not yet been proposed.
  • the outer casing has a wear and / or temperature protection function, while the main body serves as a supporting body, wherein its carrying capacity is significantly increased by the cooling.
  • the storage of the rotatable elements is advantageously carried out of the housing, in addition, a cooling of the bearing can be provided.
  • the device for separating or classifying feed material preferably comes in a plant for the heat treatment of feed material, in particular of
  • Separating and classifying is arranged between preheater and rotary kiln.
  • FIG. 6 to Fig. 8 different cross-sectional views of the rotatable elements
  • Fig. 9 is a schematic view of a plant for heat treatment of feed.
  • the device 100 shown in FIGS. 1 and 2 for separating or classifying feed material 1 into at least two different grain fractions 2, 3 has a feed opening 4, a screen device 5 designed as a roller grate and at least one outlet opening 6 for a finer grain fraction 2 and an outlet opening 7 for a coarser grain fraction 3.
  • the screening device 5 provides a plurality of rollers or rollers formed rotatable elements 8, which are at least partially driven.
  • the finer grain fraction 2 passes between the rotatable elements 8 so that the distance between two adjacent rotatable elements is the size of the finer ones
  • Length of the screening device 5 different grain fractions could be deducted as Naturalfallgut.
  • the rotatable elements thus have a conveying function in addition to the separation or classification function.
  • the rotatable elements 8 are mounted in bearings 10, 11 and can be driven by suitable drive means 12 (shown only schematically in the drawing).
  • the bearings 10, 11 are expediently arranged outside a housing 13 of the device 100 in order to protect them from dust and temperature influences.
  • Main body 8a and a corresponding wear and / or temperature resistant sheathing 8b to ensure a sufficient service life during processing of the feed material. If appropriate, a suitable insulation 8c can also be provided between the main body 8a and the sheathing 8b.
  • the main body 8a has a channel 8d extending in the direction of its axis of rotation 8e and acted upon by a cooling medium, which channel is connected to means 14 for supplying a cooling medium. It come here liquid and / or gaseous coolant medium, such as water or air, into consideration. Also for the bearings 10, 11 means not shown in detail can be provided for cooling.
  • the screening device 5 can be arranged both horizontally and inclined. In both cases, it may be expedient if between two adjacent rotatable elements 8 a Materialleitelement 15 is provided to prevent unwanted filling of the gusset between the two rollers, thereby improving the conveying effect (Figure 4).
  • the rotatable elements 8 could therefore be designed and stored such that a Comminution of such material in the gap between two adjacent rotatable elements 8 takes place.
  • FIG. 5 Another way to remedy any blockages in the gap between two rotatable elements 8 is shown in Fig. 5. This is
  • Means or an element 16 for cleaning the gap by this element is arranged below the gap and can be moved up into the gap.
  • Elements 8 are shown. The peculiarity of these elements is that with a synchronous rotation of these elements a substantially constant gap remains.
  • the advantage of an elliptical element (FIG. 6), a cross-sectionally triangular (FIG. 7) or quadrangular element (FIG. 8) with rounded side surfaces is above all the better conveying effect.
  • all rotatable elements 8 are driven in the same direction of rotation, whereby regulation of the rotational speed of all or part of the rotatable elements can be provided.
  • FIG. 9 shows a very schematic representation of a plant for heat treatment of feed material.
  • it has a preheater for Preheating the feed, in particular raw material, a device 100 for separating or classifying feed material and a rotary kiln for burning the preheated feed material.
  • the feed material separating or classifying device 100 is disposed between the preheater 200 and the rotary kiln 300 to discharge a grain fraction undesirably fine for the rotary kiln.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

The device according to the invention for separating or classifying material to be fed into at least two different grain fractions comprises a screen device, which is formed by rotatable elements, particularly a roller table screen, wherein at least one finer grain fraction passes between the rotatable elements and means are provided for cooling the rotatable elements.

Description

Verfahren und Vorrichtung zum Trennen oder Klassieren von Aufgabegut Method and device for separating or classifying feedstock
Die Erfindung betrifft eine Verfahren und eine Vorrichtung zum Trennen oder Klassieren von Aufgabegut in wenigstens zwei unterschiedliche Kornfraktionen mit einer Siebeinrichtung, die durch drehbare Elemente, insbesondere einen Rollenrost, gebildet wird, wobei wenigstens eine feinere Kornfraktion zwischen den drehbaren Elementen hindurchfällt.The invention relates to a method and a device for separating or classifying feedstock into at least two different grain fractions with a sieve device formed by rotatable elements, in particular a roller grate, wherein at least a finer grain fraction falls through between the rotatable elements.
Auf dem Gebiet der Wärmebehandlung von Rohstoffen, insbesondere bei der Vorwärmung bzw. Calcinierung von Rohstoffen der Zement- bzw. Kalkindustrie, ist zwischen zwei Wärmebehandlungsstufen oftmals eine Trennung bzw. Klassierung des Materials erforderlich. Zu diesem Zweck werden beispielsweise Klassierroste und Wirbelschichteinrichtungen verwendet. Bedingt durch das heiße Material, welches Temperaturen von mehr als 75O0C aufweisen kann, kommt es hierbei immer wieder zu Verstopfungen und Einschränkungen in der Funktion der Siebvorrichtung.In the field of heat treatment of raw materials, especially in the preheating or calcination of raw materials of the cement or lime industry, a separation or classification of the material is often required between two heat treatment stages. For example, classifying gratings and fluidized bed equipment are used for this purpose. Due to the hot material, which may have temperatures of more than 75O 0 C, it always comes back to blockages and restrictions in the function of the screening device.
Aus der DE-AS-I 124 892 ist ein Drehstabrost- oder Siebbodensystem bekannt, welches mittels elektrischer Energie, Flüssigkeiten oder Gasen gekühlt oder erhitzt werden kann. Bei der Wärmebehandlung von Rohstoffen, insbesondere bei der Vorwärmung bzw. Calcinierung von Rohstoffen der Zement- bzw. Kalkindustrie ist ein gekühlter Klassierrost jedoch bisher nicht zum Einsatz gekommen.From DE-AS-I 124 892 a Drehstabrost or sieve tray system is known, which can be cooled or heated by means of electrical energy, liquids or gases. In the heat treatment of raw materials, especially in the preheating or calcination of raw materials of the cement or lime industry, a cooled Klassierrost but has not been used.
Der Erfindung liegt die Aufgabe zugrunde, das Verfahren und die Vorrichtung zum Trennen oder Klassieren von Aufgabegut auf dem Gebiet der Wärmebehandlung von Rohstoffen, insbesondere bei der Vorwärmung bzw. Calcinierung von Rohstoffen der Zement- bzw. Kalkindustrie, zu verbessern.The invention has for its object to improve the method and apparatus for separating or classifying feedstock in the field of heat treatment of raw materials, especially in the preheating or calcination of raw materials of the cement or lime industry.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale der Ansprüche 1, 11 und 15 gelöst. Die erfindungsgemäße Vorrichtung zum Trennen oder Klassieren von Aufgabegut in wenigstens zwei unterschiedliche Kornfraktion weist eine Siebeinrichtung auf, die durch drehbare Elemente, insbesondere einen Rollenrost gebildet wird, wobei wenigstens eine feinere Kornfraktion zwischen den drehbaren Elementen hindurchfällt und Mittel zur Zuführung eines Kühlmediums zu den drehbarenAccording to the invention this object is solved by the features of claims 1, 11 and 15. The device according to the invention for separating or classifying feed material into at least two different grain fractions has a screening device which is formed by rotatable elements, in particular a roller grate, wherein at least a finer grain fraction falls through between the rotatable elements and means for supplying a cooling medium to the rotatable elements
Elementen vorgesehen sind. Die drehbaren Elemente weisen einen Grundkörper und eine äußere Ummantelung auf, wobei der Grundkörper einen in Richtung seiner Drehachse verlaufenden, mit dem Kühlmedium beaufschlagbaren Kanal vorsieht, der mit den Mitteln zur Zuführung des Kühlmediums in Verbindung steht.Elements are provided. The rotatable elements have a base body and an outer sheath, wherein the base body provides a running in the direction of its axis of rotation, acted upon by the cooling medium channel, which is in communication with the means for supplying the cooling medium.
Rollenroste sind zwar auf anderen Gebieten, insbesondere bei Bekohlungsanlagen, bekannt, jedoch werden diese Rollenroste nur bei Umgebungstemperaturen eingesetzt. Ein Einsatz unter extremen Bedingungen, wie sie beispielsweise bei der Vorwärmung bzw. Calcinierung von Rohstoffen der Zement- bzw. Kalkindustrie vorherrschen, wurde bisher noch nicht vorgeschlagen.Although roller grates are known in other fields, especially in coaling systems, these roller grates are only used at ambient temperatures. An application under extreme conditions, as prevail, for example, in the preheating or calcination of raw materials of the cement or lime industry, has not yet been proposed.
Die äußere Ummantelung hat insbesondere eine Verschleiß- und/oder Temperaturschutzfunktion, während der Grundkörper als Tragkörper dient, wobei dessen Tragfähigkeit durch die Kühlung deutlich erhöht wird.In particular, the outer casing has a wear and / or temperature protection function, while the main body serves as a supporting body, wherein its carrying capacity is significantly increased by the cooling.
Beim erfindungsgemäßen Verfahren weist das Aufgabegut eine Temperatur von wenigstens 25O0C, insbesondere von wenigstens 75O0C auf. Durch das Vorsehen der Mittel zum Kühlen der drehbaren Elemente kann der Rollenrost bei diesen extremen Bedingungen zum Einsatz kommen.In the method according to the invention, the feedstock has a temperature of at least 25O 0 C, in particular of at least 75O 0 C. By providing the means for cooling the rotatable elements, the roller grate can be used in these extreme conditions.
Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.
Die Siebeinrichtung ist vorzugsweise als Rollenrost und die drehbaren Elemente sind als Rollen oder Walzen ausgebildet. Die drehbaren Elemente dienen dabei für eine größere Kornfraktion als Förderelemente und sind zu diesem Zweck zumindest teilweise antreibbar. Gemäß einem bevorzugten Ausführungsbeispiel kann zwischen der äußere Ummantelung und dem Grundkörper eine Isolierung vorgesehen werden, sodass eine kostengünstige Kühlung des Grundkörpers mittels Luft in Betracht kommt.The screening device is preferably as a roller grate and the rotatable elements are designed as rollers or rollers. The rotatable elements serve for a larger grain fraction as conveying elements and are for this purpose at least partially driven. According to a preferred embodiment, an insulation can be provided between the outer casing and the base body, so that cost-effective cooling of the base body by means of air is considered.
Die Lagerung der drehbaren Elemente erfolgt zweckmäßigerweise außerhalb des Gehäuses, wobei zusätzlich eine Kühlung der Lager vorgesehen werden kann.The storage of the rotatable elements is advantageously carried out of the housing, in addition, a cooling of the bearing can be provided.
Die Vorrichtung zum Trennen oder Klassieren von Aufgabegut kommt vorzugsweise in einer Anlage zur Wärmebehandlung von Aufgabegut, insbesondere vonThe device for separating or classifying feed material preferably comes in a plant for the heat treatment of feed material, in particular of
Rohmaterial mit einen Vorwärmer zum Vorwärmen des Aufgabeguts, und einemRaw material with a preheater for preheating the feed, and a
Drehrohrofen zum Brennen des Aufgabegutes zum Einsatz. Die Vorrichtung zumRotary kiln for burning the feedstock used. The device for
Trennen und Klassieren wird dabei zwischen Vorwärmer und Drehrohrofen angeordnet.Separating and classifying is arranged between preheater and rotary kiln.
Weitere Vorteile und Ausgestaltungen der Erfindung werden im Folgenden anhand der Beschreibung und der Zeichnung näher erläutert.Further advantages and embodiments of the invention will be explained in more detail below with reference to the description and the drawing.
In der Zeichnung zeigenIn the drawing show
Fig. 1 eine schematische Längsschnittdarstellung der erfindungsgemäßenFig. 1 is a schematic longitudinal sectional view of the invention
Vorrichtung zum Trennen oder Klassieren von Aufgabegut,Device for separating or classifying feedstock,
Fig. 2 eine schematische Seitenansicht im Bereich eines drehbaren Elementes,2 shows a schematic side view in the region of a rotatable element,
Fig. 3 eine Schnittdarstellung eines drehbaren Elements,3 is a sectional view of a rotatable member,
Fig. 4 eine Schnittdarstellung im Bereich benachbarter drehbarer Elemente mit einem Materialleitelement, Fig. 5 eine Schnittdarstellung im Bereich benachbarter drehbarer4 is a sectional view in the region of adjacent rotatable elements with a Materialleitelement, Fig. 5 is a sectional view in the region of adjacent rotatable
Elemente mit Mittel zum Reinigen des Spaltes zwischen den beiden drehbaren Elementen,Elements with means for cleaning the gap between the two rotatable elements,
Fig. 6 bis Fig. 8 verschiedene Querschnittsdarstellungen der drehbaren Elemente undFig. 6 to Fig. 8 different cross-sectional views of the rotatable elements and
Fig. 9 eine schematische Ansicht einer Anlage zur Wärmebehandlung von Aufgabegut.Fig. 9 is a schematic view of a plant for heat treatment of feed.
Die in den Fig. 1 und Fig. 2 dargestellte Vorrichtung 100 zum Trennen oder Klassieren von Aufgabegut 1 in wenigstens zwei unterschiedliche Kornfraktionen 2, 3 weist eine Aufgabeöffnung 4, eine als Rollenrost ausgebildete Siebeinrichtung 5 sowie wenigstens eine Auslassöffnung 6 für eine feinere Kornfraktion 2 und eine Auslassöffnung 7 für eine gröbere Kornfraktion 3 auf.The device 100 shown in FIGS. 1 and 2 for separating or classifying feed material 1 into at least two different grain fractions 2, 3 has a feed opening 4, a screen device 5 designed as a roller grate and at least one outlet opening 6 for a finer grain fraction 2 and an outlet opening 7 for a coarser grain fraction 3.
Die Siebeinrichtung 5 sieht eine Vielzahl als Rollen oder Walzen ausgebildete drehbare Elemente 8 vor, die zumindest teilweise antreibbar sind. Die feinere Kornfraktion 2 fällt zwischen den drehbaren Elementen 8 hindurch, sodass der Abstand zwischen zwei benachbarten drehbaren Elementen die Größe der feinerenThe screening device 5 provides a plurality of rollers or rollers formed rotatable elements 8, which are at least partially driven. The finer grain fraction 2 passes between the rotatable elements 8 so that the distance between two adjacent rotatable elements is the size of the finer ones
Kornfraktion 2 bestimmt. Der Abstand kann über die Länge des Rostes gleich oder unterschiedlich ausgebildet sein. Vorzugsweise ist der Abstand zwischen benachbarten drehbaren Elementen 8 einstellbar.Grain fraction 2 determined. The distance may be the same or different over the length of the grate. Preferably, the distance between adjacent rotatable elements 8 is adjustable.
In Fig. 1 ist durch die gestrichelt eingezeichnete Wand 9 angedeutet, dass über dieIn Fig. 1 is indicated by the dashed line wall 9 that over the
Länge der Siebeinrichtung 5 unterschiedliche Kornfraktionen als Durchfallgut abgezogen werden könnten. Zu diesem Zweck würde man den Abstand der drehbaren Elemente 8 im ersten Teil der Siebeinrichtung 5 enger als im zweiten Abschnitt ausbilden. Die gröbere Kornfraktion 3, die nicht zwischen den drehbaren Elementen 8 nach unten fällt, wird durch die drehbaren Elemente zur Auslassöffnung 7 gefördert. Die drehbaren Elemente haben somit neben der Trenn- bzw. Klassierfunktion auch eine Förderfunktion.Length of the screening device 5 different grain fractions could be deducted as Durchfallgut. For this purpose, one would form the distance of the rotatable elements 8 in the first part of the screening device 5 narrower than in the second section. The coarser grain fraction 3, which does not fall down between the rotatable elements 8, becomes the outlet opening through the rotatable elements 7 promoted. The rotatable elements thus have a conveying function in addition to the separation or classification function.
Die drehbaren Elemente 8 sind in Lagern 10, 11 gelagert und können über geeignete Antriebsmittel 12 (in der Zeichnung nur schematisch dargestellt) angetrieben werden. Die Lager 10, 11 sind zweckmäßigerweise außerhalb eines Gehäuses 13 der Vorrichtung 100 angeordnet, um sie vor Staub- und Temperatureinflüssen zu schützen.The rotatable elements 8 are mounted in bearings 10, 11 and can be driven by suitable drive means 12 (shown only schematically in the drawing). The bearings 10, 11 are expediently arranged outside a housing 13 of the device 100 in order to protect them from dust and temperature influences.
Wie aus Fig. 2 und 3 hervorgeht, besteht das drehbare Element 8 aus einemAs is apparent from Figs. 2 and 3, the rotatable member 8 consists of a
Grundkörper 8a und einer entsprechend verschleiß- und/oder temperaturbeständigen Ummantelung 8b, um eine ausreichende Standzeit bei Verarbeitung des Aufgabegutes zu gewährleisten. Gegebenenfalls kann zwischen dem Grundkörper 8a und der Ummantelung 8b noch eine geeignete Isolierung 8c vorgesehen werden.Main body 8a and a corresponding wear and / or temperature resistant sheathing 8b to ensure a sufficient service life during processing of the feed material. If appropriate, a suitable insulation 8c can also be provided between the main body 8a and the sheathing 8b.
Der Grundkörper 8a weist einen in Richtung seiner Drehachse 8e verlaufenden, mit einem Kühlmedium beaufschlagbaren Kanal 8d auf, der mit Mitteln 14 zur Zuführung eines Kühlmediums in Verbindung steht. Es kommen dabei flüssige und/oder gasförmigen Kühlmittelmedium, wie Wasser oder Luft, in Betracht. Auch für die Lager 10, 11 können nicht näher dargestellte Mittel zur Kühlung vorgesehen werden.The main body 8a has a channel 8d extending in the direction of its axis of rotation 8e and acted upon by a cooling medium, which channel is connected to means 14 for supplying a cooling medium. It come here liquid and / or gaseous coolant medium, such as water or air, into consideration. Also for the bearings 10, 11 means not shown in detail can be provided for cooling.
Die Siebeinrichtung 5 kann sowohl horizontal als auch geneigt angeordnet werden. In beiden Fällen kann es zweckmäßig sein, wenn zwischen zwei benachbarten drehbaren Elementen 8 ein Materialleitelement 15 vorgesehen ist, um ein unerwünschtes Auffüllen des Zwickels zwischen den beiden Walzen zu vermeiden und dadurch die Förderwirkung zu verbessern (Fig.4).The screening device 5 can be arranged both horizontally and inclined. In both cases, it may be expedient if between two adjacent rotatable elements 8 a Materialleitelement 15 is provided to prevent unwanted filling of the gusset between the two rollers, thereby improving the conveying effect (Figure 4).
Dennoch wird es immer wieder vorkommen, dass größere Partikel im Bereich des Spaltes festsitzen und dadurch die Trenn- bzw. Klassierwirkung beeinträchtigen. Die drehbaren Elemente 8 könnten daher derart ausgebildet und gelagert sein, dass eine Zerkleinerung derartigen Materials im Spalt zwischen zwei benachbarten drehbaren Elementen 8 erfolgt.Nevertheless, it will happen again and again that larger particles are stuck in the region of the gap and thereby impair the separating or Klassierwirkung. The rotatable elements 8 could therefore be designed and stored such that a Comminution of such material in the gap between two adjacent rotatable elements 8 takes place.
Eine weitere Möglichkeit zur Behebung etwaiger Verstopfungen im Spalt zwischen zwei drehbaren Elementen 8 ist in Fig. 5 dargestellt. Hierbei handelt es sich umAnother way to remedy any blockages in the gap between two rotatable elements 8 is shown in Fig. 5. This is
Mittel bzw. ein Element 16 zum Reinigen des Spaltes, indem dieses Element unterhalb des Spaltes angeordnet und nach oben in den Spalt einfahrbar ist.Means or an element 16 for cleaning the gap by this element is arranged below the gap and can be moved up into the gap.
Die Querschnittsform der drehbaren Elemente 8 ist keinesfalls auf eine Kreisform beschränkt. In den Fig. 6 bis 8 sind verschiedene Querschnittsformen der drehbarenThe cross-sectional shape of the rotatable elements 8 is by no means limited to a circular shape. In Figs. 6 to 8 are various cross-sectional shapes of the rotatable
Elemente 8 dargestellt. Die Besonderheit dieser Elemente besteht darin, dass bei einer synchronen Drehung dieser Elemente ein im Wesentlichen konstanter Spalt verbleibt. Der Vorteil eines elliptischen Elements (Fig. 6), eines im Querschnitt dreieckförmigen (Fig. 7) oder viereckigen Elements (Fig. 8) mit abgerundeten Seitenflächen besteht vor allem in der besseren Förderwirkung.Elements 8 are shown. The peculiarity of these elements is that with a synchronous rotation of these elements a substantially constant gap remains. The advantage of an elliptical element (FIG. 6), a cross-sectionally triangular (FIG. 7) or quadrangular element (FIG. 8) with rounded side surfaces is above all the better conveying effect.
Im Rahmen der Erfindung besteht aber selbstverständlich auch die Möglichkeit, dass über die Länge der Siebvorrichtung gleiche oder unterschiedlich geformte drehbare Elemente 8 verwendet werden. Auch können unterschiedliche Größen einer bestimmten Form vorgesehen werden.In the context of the invention, of course, there is also the possibility that the same or differently shaped rotatable elements 8 are used over the length of the screening device. Also, different sizes of a particular shape can be provided.
Üblicherweise werden alle drehbaren Elemente 8 in der gleichen Rotationsrichtung angetrieben, wobei eine Regulierung der Drehzahl aller oder eines Teils der drehbaren Elemente vorgesehen werden kann.Usually, all rotatable elements 8 are driven in the same direction of rotation, whereby regulation of the rotational speed of all or part of the rotatable elements can be provided.
Zur Reinigung etwaiger Verstopfungen im Bereich der Spalte kann es außerdem zweckmäßig sein, die drehbaren Elemente 8 kurzfristig entgegen der üblichen Drehrichtung anzutreiben.To clean any blockages in the region of the column, it may also be expedient to drive the rotatable elements 8 in the opposite direction to the usual direction of rotation.
In Fig. 9 ist eine sehr schematische Darstellung einer Anlage zur Wärmebehandlung von Aufgabegut ersichtlich. Sie weist insbesondere einen Vorwärmer zum Vorwärmen des Aufgabegutes, insbesondere Rohmaterial, eine Vorrichtung 100 zum Trennen oder Klassieren von Aufgabegut sowie einen Drehrohrofen zum Brennen des vorgewärmten Aufgabegutes auf. Die Vorrichtung 100 zum Trennen oder Klassieren von Aufgabegut ist zwischen dem Vorwärmer 200 und dem Drehrohrofen 300 angeordnet, um eine für den Drehrohrofen unerwünscht feine Kornfraktion auszuscheiden. FIG. 9 shows a very schematic representation of a plant for heat treatment of feed material. In particular, it has a preheater for Preheating the feed, in particular raw material, a device 100 for separating or classifying feed material and a rotary kiln for burning the preheated feed material. The feed material separating or classifying device 100 is disposed between the preheater 200 and the rotary kiln 300 to discharge a grain fraction undesirably fine for the rotary kiln.

Claims

Patentansprüche claims
1. Vorrichtung (100) zum Trennen oder Klassieren von Aufgabegut (1) in wenigstens zwei unterschiedliche Kornfraktionen (2, 3) mit einer Siebeinrichtung (5), die durch drehbare Elemente (8) gebildet wird, wobei wenigstens eine feinereDevice (100) for separating or classifying feed material (1) into at least two different grain fractions (2, 3) with a sieve device (5) formed by rotatable elements (8), wherein at least one finer one
Kornfraktion (2) zwischen den drehbaren Elementen hindurch fällt und Mittel (14) zur Zuführung eines Kühlmediums zu den drehbaren Elementen (8) vorgesehen sind,Grain fraction (2) falls between the rotatable elements and means (14) are provided for supplying a cooling medium to the rotatable elements (8),
dadurch gekennzeichnet, dass die drehbaren Elemente (8) einen Grundkörpercharacterized in that the rotatable elements (8) have a base body
(8a) und eine äußere Ummantelung (8b) aufweisen, wobei der Grundkörper (8a) einen in Richtung seiner Drehachse (8e) verlaufenden, mit einem Kühlmedium beaufschlagbaren Kanal (8d) aufweist, der mit den Mitteln (14) zur Zuführung des Kühlmediums in Verbindung steht.(8a) and an outer casing (8b), wherein the base body (8a) in the direction of its axis of rotation (8e) extending, acted upon by a cooling medium channel (8d), with the means (14) for supplying the cooling medium in Connection stands.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Siebeinrichtung als Rollenrost und die drehbaren Elemente (8) als Rollen oder Walzen ausgebildet sind.2. Apparatus according to claim 1, characterized in that the screening device as a roller grate and the rotatable elements (8) are designed as rollers or rollers.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die drehbaren3. Device according to claim 1, characterized in that the rotatable
Elemente (8) zumindest teilweise mit einem Antrieb verbunden sind.Elements (8) are at least partially connected to a drive.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Abstand zwischen den drehbaren Elementen (8) zumindest teilweise einstellbar ist.4. Apparatus according to claim 1, characterized in that the distance between the rotatable elements (8) is at least partially adjustable.
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die drehbaren Elemente (8) innerhalb eines Gehäuses (13) vorgesehen sind und die drehbaren Elemente (8) in Lagern (10, 11) gelagert sind, die außerhalb des Gehäuses angeordnet sind. 5. The device according to claim 1, characterized in that the rotatable elements (8) within a housing (13) are provided and the rotatable elements (8) in bearings (10, 11) are mounted, which are arranged outside of the housing.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Lager (10, 11) Mittel zur Kühlung aufweisen.6. Apparatus according to claim 5, characterized in that the bearings (10, 11) comprise means for cooling.
7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die äußere Ummantelung (8b) der drehbaren Elemente (8) verschleiß- und/oder temperaturbeständig ist.7. The device according to claim 1, characterized in that the outer sheath (8 b) of the rotatable elements (8) is wear and / or temperature resistant.
8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zwischen zwei benachbarten drehbaren Elementen (8) Materialleitelemente (15) vorgesehen sind.8. The device according to claim 1, characterized in that between two adjacent rotatable elements (8) Materialleitelemente (15) are provided.
9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zwischen zwei benachbarten drehbaren Elementen (8) Mittel (16) zum Reinigen des Spaltes zwischen den beiden drehbaren Elementen vorgesehen sind.9. The device according to claim 1, characterized in that between two adjacent rotatable elements (8) means (16) are provided for cleaning the gap between the two rotatable elements.
10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die drehbaren Elemente (8) eine nicht kreisförmige Form aufweisen, aber zwischen zwei benachbarten drehbaren Elementen während der Drehbewegung ein im Wesentlichen konstanter Spalt verbleibt.10. The device according to claim 1, characterized in that the rotatable elements (8) have a non-circular shape, but remains a substantially constant gap between two adjacent rotatable elements during the rotational movement.
11. Verfahren zum Trennen oder Klassieren von Aufgabegut, gekennzeichnet durch die Verwendung einer Vorrichtung (100) nach einem oder mehreren der vorhergehenden Ansprüche, wobei das Aufgabegut (1) eine Temperatur von wenigstens 25O0C, insbesondere von wenigstens 75O0C aufweist.11. A method for separating or classifying feedstock, characterized by the use of a device (100) according to one or more of the preceding claims, wherein the feedstock (1) has a temperature of at least 25O 0 C, in particular of at least 75O 0 C.
12. Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass zumindest ein Teil der drehbaren Elemente (8) angetrieben wird.12. The method according to claim 11, characterized in that at least a part of the rotatable elements (8) is driven.
13. Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass die drehbaren Elemente (8) mit einem Kühlmedium beaufschlagt werden. 13. The method according to claim 11, characterized in that the rotatable elements (8) are acted upon by a cooling medium.
14. Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass die Drehrichtung und/oder Drehgeschwindigkeit der drehbaren Elemente (8) veränderbar ist.14. The method according to claim 11, characterized in that the direction of rotation and / or rotational speed of the rotatable elements (8) is variable.
15. Anlage zur Wärmebehandlung von Aufgabegut, insbesondere von Rohmaterial, mit einem Vorwärmer (200) zum Vorwärmen des Aufgabegutes und einem15. plant for heat treatment of feed material, in particular of raw material, with a preheater (200) for preheating the feed material and a
Drehrohrofen (300) zum Brennen des vorgewärmten Aufgabegutes, dadurch gekennzeichnet, dass zwischen Vorwärmer (200) und Drehrohrofen (300) eine Vorrichtung (100) nach einem oder mehreren der Ansprüche 1 bis 12 angeordnet ist. Rotary kiln (300) for firing the preheated feed, characterized in that between preheater (200) and rotary kiln (300), a device (100) according to one or more of claims 1 to 12 is arranged.
EP08718049.3A 2007-04-17 2008-03-19 Method and device for heat treatment including method and device for separating or classifying material to be fed Active EP2136937B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018092A DE102007018092A1 (en) 2007-04-17 2007-04-17 Device for separating or classifying feedstock
PCT/EP2008/053328 WO2008125415A2 (en) 2007-04-17 2008-03-19 Method and device for separating or classifying material to be fed

Publications (2)

Publication Number Publication Date
EP2136937A2 true EP2136937A2 (en) 2009-12-30
EP2136937B1 EP2136937B1 (en) 2014-10-01

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ID=39767802

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EP08718049.3A Active EP2136937B1 (en) 2007-04-17 2008-03-19 Method and device for heat treatment including method and device for separating or classifying material to be fed

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US (1) US8235219B2 (en)
EP (1) EP2136937B1 (en)
AU (1) AU2008238146B2 (en)
BR (1) BRPI0808915B1 (en)
CA (1) CA2681016C (en)
DE (1) DE102007018092A1 (en)
DK (1) DK2136937T3 (en)
WO (1) WO2008125415A2 (en)
ZA (1) ZA200906311B (en)

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Also Published As

Publication number Publication date
ZA200906311B (en) 2010-05-26
DK2136937T3 (en) 2015-01-12
EP2136937B1 (en) 2014-10-01
US8235219B2 (en) 2012-08-07
AU2008238146B2 (en) 2011-10-06
WO2008125415A3 (en) 2008-12-18
AU2008238146A1 (en) 2008-10-23
CA2681016C (en) 2015-01-06
DE102007018092A1 (en) 2008-10-23
BRPI0808915B1 (en) 2019-10-15
BRPI0808915A2 (en) 2014-08-19
CA2681016A1 (en) 2008-10-23
BRPI0808915A8 (en) 2015-04-28
WO2008125415A2 (en) 2008-10-23
US20100116719A1 (en) 2010-05-13

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